Gas generator
AssigneeTRW Airbag Systems GmbH
InventorsIngrid Hofbauer, Markus Leifheit, Marc Winterhalder
Life of this patent
Estimating the term…
Abstract
A gas generator, in particular for vehicle occupant restraint systems, has a housing with chambers provided therein, of which at least one chamber is filled with gas and at least one chamber is filled with propellant the gas generator further has at least one igniter for igniting the propellant. The igniter cap is secured in a gas- and pressure-tight manner by welding to a closure part which closes an opening in the housing.
Claims19
A gas generator for a vehicle occupant restraint system, said gas generator comprising:
- a housing with at least one chamber filled with gas and at least one combustion chamber filled with propellant;
- at least one igniter which comprises ignition material and is for igniting the propellant;
- and
- a mixing chamber being in fluid connection with said gas-filled chamber and said mixing chamber being in fluid connection with said combustion chamber through a connection distinct from the connection between said mixing chamber and said gas-filled chamber;
- said housing having an opening and a closure part which closes said opening;
- said igniter having an igniter cap encasing said ignition material and being secured to said closure part in a gas-and-pressure-tight manner by welding;
- said mixing chamber having an outflow opening that is closed before activation of said gas generator.
A gas generator for a vehicle occupant restraint system, said gas generator comprising:
- a housing with at least one chamber filled with gas and at least one combustion chamber filled with propellant;
- at least one igniter which comprises ignition material and is for igniting the propellant;
- and
- an expansion chamber for hot gases arising on deflagration of said ignition material;
- said housing having an opening and a closure part which closes said opening;
- said igniter having an igniter cap encasing said ignition material and being secured to said closure part in a gas-and-pressure-tight manner by welding;
- said igniter extending into said expansion chamber;
- said expansion chamber being surrounded by said combustion chamber and being in fluid connection therewith in the non-activated state of said generator.
A gas generator for a vehicle occupant restraint system, said gas generator comprising:
- a housing with at least one chamber filled with gas and at least one combustion chamber filled with propellant;
- and
- at least one igniter comprising ignition material for igniting the propellant;
- said housing having an opening and a closure part which closes said opening;
- said igniter having an igniter cap encasing said ignition material and being secured to said closure part in a gas-and-pressure-tight manner by welding;
- said closure part having an inner side and a recess at said inner side into which said igniter cap is partly inserted, said recess conforming to the shape and dimensions of said igniter cap and having a side wall and a bottom wall, said recess being engaged by said igniter cap.
Dependencies are inferred from the claim text.